Ironically 99% of them don’t meet legal requirements. They serve no purpose.
replyThe purpose is to make people think laws like gdpr are bad for people, rather than bad for the surveillance industry.
replyCookie banners aren't across the whole internet.
replyYou really only need the banners if you're doing privacy-impinging things.
replyMuch like the GDPR notices that a small industry of 'compliance' product companies sold seemingly to everyone as necessary, they aren't if you're only using cookies for functional reasons and not tracking people. Unfortunately that leads to lower margins for advertisers and we can't have that.